In order to tell Go that this is a Go module, you will need to create a Go module using the go mod command:
go mod init greeterIn order to tell Go that this is a Go module, you will need to create a Go module using the go mod command:
go mod init greeterLet’s take a closer look at the module method. If you had a go.mod file in your project with a module declaration such as the following:
module github.com/sammy/sharkIf you are running macOS or Linux, you will find a new executable file that has been named after the directory in which you built your program:
Outputgreeter main.goRun the following go build command with the -o flag:
go build -o bin/helloNow run the install command:
go installTo find where your $GOPATH directory is located, run the following command:
go env GOPATHThe output you receive will vary, but the default is the go directory inside of your $HOME directory:
Output$HOME/goNow, that you’ve created your executable, run it to make sure the binary has been built correctly. On macOS or Linux, run the following command:
./greeterThe output of the binary will match the output from when you ran the program with go run:
OutputHello, World!This will build your binary and place it in $GOPATH/bin. To test this, run the following:
ls $GOPATH/binRecommend
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